Tension Control in Roll-to-Roll Mechanical Peeling for 2D Material Transfer and Transfer Printing
Tension Control in Roll-to-Roll Mechanical Peeling for 2D Material Transfer and Transfer Printing
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发表时间：
2021
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通讯作者：
Qishen Zhao;Christopher Martin;N. Hong;Dongmei Chen;Wei Li
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作者：
Qishen Zhao;Christopher Martin;N. Hong;Dongmei Chen;Wei Li
二维（2D）材料大规模应用的一个主要挑战是扩大其生长和转移过程。机械剥离已被证明是以快速且环保的方式转移石墨烯的一种有前途的方法。然而，在扩大这一进程方面一直缺乏努力。使用卷对卷（R2R）系统进行机械剥离可以显着提高石墨烯转移的吞吐量。这样的 R2R 流程在工业中并不存在。本文提出了一种新型的 R2R 机械剥离系统，该系统具有速度和张力控制功能。控制剥离前端两侧剥离张力的控制器是基于张力动力学模型开发的。两个控制器都包含一个反馈和一个前馈项，以解决较大的稳态误差。通过实验和模拟验证了控制性能，证明 R2R 机械剥离技术可以成为高通量工业环境中二维材料干转移的可行方法。
A major challenge of the large-scale application of two-dimensional (2D) materials is the scaling up of the process for its growth and transfer. Mechanical peeling has been demonstrated to be a promising method for transferring graphene in a fast and environmentally friendly manner. However, efforts in scaling up the process have been lacking. Performing mechanical peeling using a roll-to-roll (R2R) system could significantly increase the throughput of graphene transfer. Such a R2R process does not exist in industry. In this paper a novel R2R mechanical peeling system that has both speed and tension control capabilities is presented. Controllers that control the peeling tensions on both sides of the peeling front are developed based on a tension dynamics model. Both controllers contain a feedback and a feedforward term to account for large steady-state error. The control performance is validated using both experiments and simulation, demonstrating that the R2R mechanical peeling technique can be a viable method for dry transfer of 2D materials in a highthroughput industrial setting.